233520240131 has 4 divisors (see below), whose sum is σ = 233543419200. Its totient is φ = 233497061064.

The previous prime is 233520240103. The next prime is 233520240167. The reversal of 233520240131 is 131042025332.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 233520240131 - 2¹⁰ = 233520239107 is a prime.

It is a super-2 number, since 2×233520240131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 233520240131.

It is not an unprimeable number, because it can be changed into a prime (233520248131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11574416 + ... + 11594573.

It is an arithmetic number, because the mean of its divisors is an integer number (58385854800).

Almost surely, 2^233520240131 is an apocalyptic number.

233520240131 is a deficient number, since it is larger than the sum of its proper divisors (23179069).

233520240131 is a wasteful number, since it uses less digits than its factorization.

233520240131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23179068.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 233520240131 its reverse (131042025332), we get a palindrome (364562265463).

The spelling of 233520240131 in words is "two hundred thirty-three billion, five hundred twenty million, two hundred forty thousand, one hundred thirty-one".